Long-Term Ecological Research (LTER)/AND005: H.J. Andrews Watershed Streamflow Summaries

LTER - Long-Term Ecological Research Program/H.J. Andrews Forest (AND)

LTER/AND005 [Summary adapted from the LTER Core Data Set Catalog]:

Streamflow from selected small watersheds has been continuously
monitored at the Andrews since 1953. The objective of these studies
have been several-fold: to evaluate long-term changes in hydrology
associated with various management treatments, notably clearcut
logging; to provide baseline data for affiliated nutrient, water
chemistry, and sediment transport studies; and to characterize the
hydrologic regime of old-growth forests at different elevations. The
nine sites consist of three sets of paired watershed experiments (WS
1, 2, 3; 6, 7, 8; and 9, 10) and Mack Creek, a larger (6.0 km2),
old-growth watershed. Drainage areas for the paired watersheds range
from 9 to 100 ha and elevations range from 460 to 960 m. Watersheds
2, 8, and 9 are forested controls. Treatments include 100% clearcut
(WS 1, 6, and 10), patch cut with roads (WS 3), and shelterwood cut
(WS 7). All treated sites were calibrated against controls for at
least 8 years prior to treatment. Streamflow is measured continuously
with Leopold-Stevens A-35 recorders. The master stream for the
H.J. Andrews, Lookout Creek, has a U.S. Geological Survey stream
gauging station with a drainage area of approximately 63 km2; records
for this site are maintained by the U.S.G.S.

The Andrews Forest is in the western Cascade Range of Oregon in the
15,800-acre drainage basin of the Lookout Creek, a tributary of Blue
River and the McKenzie River. The area elevation ranges from 1350
feet to 5340 feet and contains excellent examples of Pacific Northwest
conifer forests, wildlife, and ecosystems.

Information about the Long-Term Ecological Research (LTER) Program can
be obtained from:

LTER Network Office
Email: [e-mail]
"http://lternet.edu"